1.

Show that the area of the triangle formed by the two tangents through P(x_(1),y_(1)) to the circle S=x^(2)+y^(2)+2gx+2fy+c=0 and the chord of contact of P w.r.t S=0 is (r(S_(11))^(3//2))/(S_(n)+r^(2)), where r is the radius of the circle.

Answer»


ANSWER :` ( R (S_11) ^(3//2))/((S_11+r^(2)))`


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